Bobbin-winding machine.



C. E. HAYES.

BOBBIN WINDING MACHINE.

APPLICATION FILED N0V18 I515- l,210,643. Patented J an. 2, 1917.

UNTTED STATES PATENT @FFTQE.

CHARLES E. HAYES, OF WORCESTER,

LIASSACHUSETTS, ASSIGNOB TO CRAINSKA THREAD COMPANY, OF WORCESTER,MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

IBQBBIN-WTNDING MACHINE.

1,210,643. Specification of Letters Patent. Patented Ja 2, 191%Application filed. November 8, 1915. Serial No. 60,178.

To all whom it may concern Be it known that I, CHAnLEs E. HAYES, acitizen of the United States, residing at Worcester, in the county ofWorcester and State of Massachusetts, have invented a new and usefulBobbin-finding Machine, of which the following is a specification.

The main principles of this invention are capable of general use forwinding bobbins of many kinds, but it is particularly adapted forwinding those of the type used in Singer sewing machines and the like.

The principal objects of the invention are to provide a constructionwhich can be used to wind bobbins economically in plants in which alarge number of sewing machines are employed; also to provide means formaking the thread cutting operation when a bobbin is fully wound morepositive and definite than heretofore and to adjust the same; toprovidemeans whereby the application of the end of the thread to thebobbin is rendered automatic and substantially instantaneous, thusmaterially reducing the time of winding and doing away with threadingthe thread through an eye; to provide an improved hub arrangement forsupporting the shaft which controls the guide for laying the thread onthe vbobbin; to provide improvements in the oiling devices and.

improvements in the way of mounting the machine. Many of these featurestaken to-, gether constitute means whereby the speed of operation isvery materially increased over any thing known in the art whereby thecost of winding is proportionately reduced. 1

Reference is to be had to the accompany ing drawing in which,

Figure 1 is a side elevation of a preferred embodiment of the inventionwith parts in section to show interior structure; Figs. 2 and 3 are endviews with parts in section showing two positions of the threadcutting'constitutes the end of, a screw 29 having mechanism; Fig. 4: is a planpartly in section; Fig. 5 is a detail sectional view on the line 5-5 ofFig. 3; Fig. 6 is an end view of the bobbin and guiding device showingthe threading operation, and Fig. 7 is a sec tional view of a Singershuttle with 'my new bobbin in place therein.

So far as I am aware, it is not now the custom of manufacturers havingseveral sewing machines in their plants to wind their own bobbins by aspecial bobbin winding machine because such bobbin winders, as forexample that shown in the patent to Borton, No. 575,587, operate only atordinary speeds and consequently it is not economical to use them forthis purpose on a large scale. This invention is designed to remedy thisdifficulty and incidentally to provide a harder and better controlledwinding of thread on the bobbin, this increasing the amount of threadthat can be wound thereon and decreasing the expense of operating the machines by decreasing the number of bobbin replacements required for adefinite amount of work. Themachine as illustrated in the drawingscomprises a main frame or casing 10. It may be stated that this frame 10is shown as removably mounted on a base plate 11 which is adapted to besecured in any desired manner to a bench or the like. This plate 11 hasan undercut ledge 12 and the base of the frame 10 a projection 13adapted to extend under it. The plate 11 is also provided with anintegral hub 14- and a screw 15 extends through the frame into the hubto hold the frame in position. In this way the machine can be removedand replaced very easily so that a number of different sizes or types ofmachines can be kept in stock and used in the same position.

The frame 10 is provided with an oil well 16 and with a shaft 17provided with a pulley 18 and having packings 19 for holding the oil.This shaft is shown as provided with a worm 20 for operating a worm gear21 having a heart shaped cam 22 thereon. This cam operates against aroll 23 on a sliding rod 24: which is normally forced by a spring 25 ina direction to cause the roll to engage the cam at all times. This rodis provided with a thread guide 26 and with a notch 27. The gear 21 andcam 22 in this case are'made in a single piece and are mounted on a stud28 which is fixed t0, and

a head on it projecting through from the outside of the casing. This issupported on the frame or casing in a fixed position by providing itwith a hub 30 in a separate piece from the casing and having a screwthread for the screw. The casing is provided with a perforation whichmay be a little larger than the shank of the screw. The screw and hubtherefore can be adjusted slightly when the machine is being set up andthen fastened in position by tightening up the screw to get the rightadjustment. For the purpose of holding the parts in adjusted positiontwo pins 30 are shown through the casing and projecting into the hub.The holes are bored and the pins inserted into the hub after theadjustment is completed for preventing its turning or getting out ofposition while the screw is being fastened or loosened.

The bearing which the frame provides for the end of the shaft 17 onwhich the bobbin is fixed is provided with a depression 31 for receivingany oil from this shaft and this depression is connected with the well11 by a passage 32 so that the oil can drain back into it. On the shaft17 are a pair of oil rings 33 kept apart by a pair of pins 3st extendingacross the well. This oils the shaft thoroughly and permits it to be runat a speed of 20,000 revolutions or thereabout. On the end of the shaft17 which projects through the end of the casing or frame is a stud 36.At the base of this stud is a flange 37 which is shown as cup-shaped onits exterior and is provided with a pin 38. This flange is madecup-shape for the purpose of fitting the convex surface of the bobbin&0. This bobbin is shown as having a simple shank through which is aperforation for receiving the stud 36, the stud and perforation being assmall as may be convenient and the flanges of the bobbin, although having parallel surfaces inside, are provided .with convex outside surfacesand the convexity extends clear to the edge of the perforation. Theobject of this is to provide a shape which will fit the ordinary Singersewing machine shuttle 41 shown in Fig. 7 and cause the spring 42thereof to be put under tension. When the shuttle is introduced in thisway the spring always bears on the bobbin and no matter under whatconditions it is operated it will not spin. This .is an importantadvantage in this art because the spinning of the bobbin results intangling up the thread and interfering with the accurate operation ofthe machine. Al'- though this difficulty has been experienced for manyyears it is still present in the machines used in practice. This bobbinalso has another feature. One of its flanges, or

preferably both of them, is provided with an eye a l and from this eyeis a narrow slit 45 extending clear to the edge of the flange. One ofthese eyes is made for registering the bobbin with the pin 38 whichprojects into it while the other is used in threading as willappear inthe description of the opertion of the machine.

The above mentioned patent to Borton shows a lever provided with acutting means and an arm for engaging the thread on the bobbin by whichthe cutting means is supposed to be caused to act when the bobbin isfilled with thread. One of the features of this invention is to providea more positive and accurate means for accomplishing'this result atdefinite time. For that purpose a lever or bell-crank is shown 'mountedon a stud ol'projecting from the frame of the machine and adapted toswing freely thereon. This is provided with a sharp edge 52 orcutting,hammer adapted to engage in the slot 27 of the rod 24 to cut the thread.The lever is provided with an arm 53 operating to engage the thread onthe bobbin and consequently to be forced out-- \vardly gradually as thebobbin is wound. The lever also has a sharp nose 5%, adapted to engage apin 55 when there is very little thread on the bobbin or when the bobbinis absent. This is provided with a comparativelv sharp point having flatconverging surfaces forming it.

On a stud 56 is pivoted an arm 57 working in slots in a boss 58 on theframe. A spring 59 acts on this arm to force it up. The arm is providedwith a projection 60 at its end having inclined surfaces thereon adaptedto engage the two inclined surfaces of the nose 54 in the two positionsshown in Figs. 2 and 3. In the position shown in Fig. 7 2 this arm 57tends to hold the arm against the thread and compress it on the bobbin.However as soon as the amount of thread thereon reaches a certain limitthe point will be moved away and over the point of the end 60 and thenthe arm 57 with its spring pressure behind it will engage the oppositeslanting surface of'the nose 5 1 and force the lever 50 into theposition shown in Fig. 3. An operating arm 61 is shown for ananipulatingthis lever by hand.

The stud 56 is mounted eccentrically on a stud 62 which can be turnedfor adjustment. It is held in adjusted position by a set screw 53. Inthis way the arm can be adjusted longitudinally and the point at-its endover which the point of the nose 5 1 has to move is consequently movedout and in along a line substantially tangent to the are made by thepoint of the nose 54 as the lever swings. This insures proper adjustmentto provide for winding more or less thread on the bobbin.

The operation of the device is as follows :The-rotation of the shaft 17caused by a belt on the pulley 18 rotates. the stud 30 of course andalso rotates the worm wheel 21 and the cam 22- so as to move the'rod 24Lback and forth. Now a bobbin is placed on the stud and held until thepin 38 entersthe eye in that flange, when it is positively connectedwith the stud and rotates positively with the shaft. The thread then isdrawn under the guide 26 over the slot 27 and over the outer edge of thebobbin. The first time the slot 45 comes around so as to receive the Lesthread'it is drawn into it and thus into the eye, it being understoodthat the operator holds the free end of the thread in her hand.

This immediately causes the thread to wind on the shank of the bobbin asthat rotates. Furthermore as the arm 53 is located in between theflanges of the bobbin the thread is cut off between this arm and theinner surface of the bobbin flange in one or two revolutions so that itwill wind up on the bobbin without any end projecting therefrom. Thisarm 53 is gradually forced outwardly until the nose 54 passes over theend 60 and then it is forced farther away so as to bring the cutter 52into the notch 27 and sever the thread at that end. This threadingoperation is particularly important as it adds materially to therapidity of the winding operation. By causing the thread to be cut at adefinite time and holding it by the spring pressed arm 53, a definiteamount of thread is wound on the bobbin and as it is wound tightly, itis a relatively large amount.

Although I have illustrated and described only a single embodiment ofthe invention, I am aware of the fact that many modifications can bemade therein by any person skilled in the art without departing from thescope of the invention as expressed in the claims. Therefore, I do notwish to be limited to all the details of construction herein shown anddescribed, but

lVhat I do claim is 1. In a bobbin winding machine, the combination of ashaft for supporting the bobbin to be wound, with a movable memberhaving means thereon for engaging the thread and cutting it off andprovided with an arm for engaging the body of wound thread on thebobbin, said movable member being provided with a nose, of an arm havingan end adapted to engage said nose to hold the first named arm incontact with the thread on the bobbin until said movable member movesover said end on the second arm, and to then force the movable member inanother direction to cause the thread to be cut.

2. In a bobbin winding machine, the combination of a shaft forsupporting the bobbin to be wound, and a thread cutting lever, withmeans whereby said lever will be operated directly by the thread on thebobbin, an arm for preventing the operation of said lever to out thethread until the thread on the bobbin fills up toa predetermineddiameter and for then immediately allowing it to move back, and aneccentric pivot on which said arm is pivoted for adjusting the point atwhich the lever will act to regulate the diameter of the thread as woundon the bobbin.

3. In a bobbin winding machine, the combination with a lever havingmeans thereon for engaging the thread and cutting it off and providedwith an arm for engaging the body of wound thread on the bobbin, saidlever being pivoted to swing about a center and being provided with asharp nose proj ection, of an arm having a sharp end adapted to engagesaid nose to hold the first named arm in contact with the thread on thebobbin until the arm positively pushes the nose on the lever over saidend on the second arm' engaging the body of wound thread on the bobbin,said lever being pivoted to swing about a center and being provided witha sharp nose projection, of an arm having a sharp end adapted to engagesaid nose, :nd a spring for forcing the second arm into position againstthe nose whereby it will yieldingly hold the first named arm in contactwith the thread on the bobbin until the arm positively pushes the noseon the lever over the projection on the second arm and will then forcethe lever in the opposite direction about its pivot to cause the threadto be cut.

5. In a bobbin winding machine, the com bination of a lever having anedge thereon for engaging the thread and cutting it off and providedwith means for engaging the body of wound thread on the bobbin. saidlever being pivoted to swing about a center and being provided with asharp nosed projection, with an arm having a sharp end adapted to engagesaid nose, yielding means for forcing the arm into position against thenose whereby it will yieldingly hold the lever in contact with thethread on the bobbin until it positively pushes the nose over theprojection on the arm and will then force the lever in the oppositedirection about its pivot, and an eccentric pivot on which the arm ispivoted whereby said arm can be adjusted longitudinally to vary theposition in which the lever will act.

6. In a bobbin winding machine, the combination of a shaft, a bobbinremovably mounted on the shaft and positively connected therewith, athread guide adjacent to the bobbin, the flange of said bobbin beingprovided with means whereby a thread extending from said guide over theedge of the bobbin will be caused to be threaded by a rotation of thebobbin and means whereby the thread projecting beyond the bobbin will beautomatically cut oif at the inner side of said flange.

7. In a winding machine, the combination of a shaft having a seat for abobbin provided with a projecting pin, a bobbin adapt-- ed to fit saidseat and having two opposite flanges, each provided With aneyetherethrough,.sa1d eyesbemg in position forone of them to receive thepin when the. bobbinv is in position on the shaft, the other eye beingprovided With a slit extending to the edge of it, and a thread guidelocated in such position that the thread extending; from the guide andpassing over the outer flange of the bobbin will be caused to beengaged-by said slit and pulled into the eye, whereby the Winding ofthebobbin can be started.

8. In a Winding machine, the combination ofa shaft having a; seat for a:bobbin provided With a projecting pin, a bobbin adapt;-

ed to fit saidseat and having two. flanges,

each having an eye, said eyes beingin ).osi tion for one of them toreceive thepin when thebobbin is in position: on the shaft, each eyehaving a slit extending to the edge of it, and a thread guide locatedin? such position that the thread extending from the guide and passingover the outer flange of the bobbin will be caused to beengaged by saidslitand pulled into the eye; and a'lever having an arm thereon adaptedto engage the shank of the bobbin and the thread Wound thereon, wherebythe; end oi the:

longitudinally for controlling the winding' 1 Y of the thread on thebobbin, a EI'RHIQ: for. supporting said shafts, a hub separate from saidframe but mounted thereon, having its axis located transverse to, the.direction: of said shafts, means for clamping said hub to theframecomprising a screw having a stud on its end and meansniounted on saidstud for receiving power frolnthe: shaft and; controllingthereciprocation of said rod.

In; testimony whereof I have hereunto set my hand. 7

CHARLES HAYES.

Copies of this patent may be obtained for five cents each, by addressingthe Commissionerof Patents- Washington,.]). 0;? I

